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2020
It is built from checkable properties of the record itself: whether the article has a DOI, how many independent sources confirmed its data, whether the required fields are filled in, and how recent the latest confirmation is. Disagreement between sources and a missing identifier lower it. A value of 80 or above means the record was published without further checking; 60 to 79 means it is published at reduced confidence, with a manual check advisable. A record verified by an editor by hand is never pushed below 90 by a recalculation. This scores our data about the article, not the article itself.
Teaching grammar and vocabulary is an essential part of any language instruction. However, along with books and theory, there can be other activities, more widely used and more motivational, to help students master the grammatical and lexical aspects of contemporary English. These include analyzing the linguistic content of pop songs as a way to acquire the language efficiently.